Naruto: overratedThe way Naruto explores human emotions is incredible even if there are more complex animes out there, it's my favorite anime ever.
FullMetal Alchemist Brotherhood is a masterpiece, really makes you think about human nature
Death Note is very fun until...
One Piece I watched only until the skypea part but loved it so far, it is so looong though! Zoro is a legend!
If you really like violent stuff, Shigurui is your thing, there's blood everywhere. The backstory is good too.
Madoka Magica is beautiful
Serial Experiments Lain is the most complex anime ever, Evangelion is on my list to watch though...
NHK is very good to understand the issues of shy people, the hikikkomori are a very big thing in Japan, highly reccomend it
Yu Gi Oh has some brilliant stuff in the ''battle of the city'' part, evil Marik is awesome, Kaiba is my favorite character though!
Watching To Aru Majutsu no Index now
FMA: brilliant
Death Note: great up until a certain point.
One piece: great but slow as hell.
Index is decent. Slightly above average. The universe itself is more interesting though, especially with accelerator in a more prominent role.